CVE-2020-4045

Information disclosure in SSB-DB

Description

SSB-DB version 20.0.0 has an information disclosure vulnerability. The get() method is supposed to only decrypt messages when you explicitly ask it to, but there is a bug where it's decrypting any message that it can. This means that it is returning the decrypted content of private messages, which a malicious peer could use to get access to private data. This only affects peers running SSB-DB@20.0.0 who also have private messages, and is only known to be exploitable if you're also running SSB-OOO (default in SSB-Server), which exposes a thin wrapper around get() to anonymous peers. This is fixed in version 20.0.1. Note that users of SSB-Server verion 16.0.0 should upgrade to 16.0.1 to get the fixed version of SSB-DB.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.32%
Third-Party Advisory github.com Third-Party Advisory github.com
Affected: ssbc SSB-DB
Published at:
Updated at:

References

Link Tags
https://github.com/ssbc/ssb-db/security/advisories/GHSA-mpgr-2cx9-327h third party advisory
https://github.com/ssbc/ssb-db/commit/43334d0871c9cc6220e0f6d6338499060f7761d4 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2020-4045?
CVE-2020-4045 has been scored as a high severity vulnerability.
How to fix CVE-2020-4045?
To fix CVE-2020-4045, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-4045 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-4045 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-4045?
CVE-2020-4045 affects ssbc SSB-DB.
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